Suspension system for sliding doors with a height and inclination adjusting mechanism

ABSTRACT

A suspension system for sliding doors with a height and inclination adjusting mechanism has a mechanism support (1), a short screw (2), a long screw (2a), two cylinders (3, 3a) with a threaded bore which extends perpendicularly to their longitudinal axes, a spring steel plate (4) for limiting the longitudinal displacement of the screws (2, 2a), a metal plate (5) for clamping the mechanism support (1) in the section (6) of the door, a pin (7) for centering the mechanism support (1) in the section of the door, a screw (8) for the centering pin (7) and a screw (9) for connecting the mechanism support (1) to the wheel support (10). The mechanism support (1) fits into the recessed part of the section (6) of the door and is connected to the wheel support (10) by the connecting screw (9). When the screws (2, 2a) turn around their own axes, they shift the two cylinders (3, 3a) and lift the front or rear part of the clamping metal plate (5), causing the length of the connecting screw (9) and pressure spring (18) to be increased or reduced and lifting or lowering the door.

FIELD OF THE INVENTION

The invention relates to a suspension system for sliding doors with aheight and inclination adjusting mechanism.

BACKGROUND OF THE INVENTION

Suspension systems for sliding doors with an adjusting mechanism areindeed known. However, they are complicated, particularly in the case ofuneven floors.

In these known systems, the adjustment of the height of the door wasregulated by means of a guide, which was fastened either on the doorframe or on the upper edge of the door.

Thus one had to unhook the door for each adjustment, adjust the doorappropriately, and again suspend the door in order to see whether thedesired result had been achieved. This operation did not enablesimultaneous adjustment of the inclination of the door relative to thefloor.

SUMMARY OF THE INVENTION

The described invention has the goal to eliminate all of thesedisadvantages since the invention makes it possible to regulate theelevational adjustment of the door without unhooking same. In additionthis mechanism has the possibility to simultaneously regulate theinclination of the door with respect to the floor in such a manner thatan exact parallelism between door and floor is guaranteed independent ofthe degree of unevenness of the floor.

The system consists of a mechanism support, two screws with twocorresponding cylinders and a spring to limit the movement of thescrews.

This suspension system for sliding doors is fastened between the doorframe and the upper edge of the door, and enables the adjustment of theheight and and inclination of the door relative to the floor.

BRIEF DESCRIPTION OF THE DRAWINGS

The type of use of this invention will be explained in the followinglisted drawings, in which:

FIG. 1 is a longitudinal cross-sectional view of the front part of thesuspension mechanism, in the lowermost operating position.

FIG. 2 is a longitudinal cross-sectional view of the front part of thesuspension mechanism, in its uppermost operating position.

FIG. 3 is a longitudinal cross-sectional view of the rear part of thesuspension mechanism, in its lowermost operating position.

FIG. 4 is a longitudinal cross-sectional view of the rear part of thesuspension mechanism, in its uppermost operating position.

FIG. 5 is a cross-sectional view of the suspension mechanism, in itslowermost operating position.

FIG. 6 is a cross-sectional view of the suspension mechanism, in itsuppermost operating position.

DETAILED DESCRIPTION

The drawings illustrate a suspension mechanism for sliding doors with aheight and inclination adjusting mechanism basically consisting of amechanism support (1), a short screw (2), a long screw (2a), twocylinders (3, 3a), which have each a taphole perpendicular with respectto its longitudinal axis, a spring steel plate (4), which limits themovement of the screws (2, 2a), a clamping metal plate (5) of themechanism support (1) in the section or track (6) of the door, a pin(7), which centers the mechanism support (1) in the section (6) of thedoor, a centering pin screw (8) which fixes the pin (7), a screw (9)which connects the mechanism support (1) to the wheel support (10).

Based on this invention the mechanism support (1) fits into the section(6) of the door, which is U-shaped.

The two open ends (11, 11a) of the section (6) form at the end twocorners (12, 12a), into which extends the mechanism support (1).

The section (6) of the door can either be an independent part, which isfastened on the upper edge of the door, or the upper part of the door ismanufactured such that the door already houses this section.

Blocking pins (14) are mounted on the door, namely where the two ends ofthe mechanism support (1) end, which blocking pins prevent the mechanismsupport (1) from running out of the track (6) of the door.

In order to permit the door to move parallel with respect to the doorframe, wheels (16, 16a) are mounted, which roll on the section (15) ofthe door frame.

These wheels (16, 16a) are connected to one another by the wheel support(10).

Each wheel (16, 16a) is connected to the support (10) by means of anaxis or axle (17, 17a).

The upper end of the connecting screw (9) is screwed to the wheelsupport (10).

The lower part of the connecting screw (9) is fitted into the mechanismsupport (1), thus the connecting screw (9) creates the connectionbetween wheel support (10) and mechanism support (1).

The connecting screw (9) is surrounded by a pressure spring (18).

The clamping metal plate (5) is mounted on the upper part of themechanism support (1), under which plate the cylinders (3, 3a) slide.

The pressure spring (18) presses the clamping metal plate (5) so thatthe plate is always under tension and in contact with the cylinders (3,3a).

Two notches (19, 19a) exist along the mechanism support (1), into whichnotches the short screw (2) and the long screw (2a) are placed.

The mechanism support (1) houses an acute recess (20, 20a) at its ends(13), in which recess is stored each one cylinder (3, 3a).

The screws (2, 2a) extend through the cylinders (3, 3a).

The spring steel plate (4) is mounted on the front end (13) of themechanism support (1), which plate limits the two screws (2, 2a).

The spring steel plate (4) has two U-shaped recesses, which limit thescrews (2, 2a) in such a manner that when the screws rotate about theirown axis, they are unable to move longitudinally.

While the screw (2, 2a) rotates about its own axis, the screw causes amovement of the respective cylinder (3, 3a), through the body of thecylinder, and the cylinders (3, 3a) are in this manner pulled or pushedaccordingly.

While the cylinders (3, 3a) are moved in opposite directions of oneanother toward the center of the mechanism support (1), they press themetal plate (5), which then presses the pressure spring (18) thusreducing the height of the connecting screw (9) and the door is liftedrelative to the floor.

In particular if one rotates the short screw (2) from the right to theleft, the cylinder (3) moves then toward the center of the mechanismsupport (1).

While the cylinder (3) slides on the acute recess (20), the front partof the metal plate (5) lifts up, and thus only the front part of thedoor lifts up.

In the reverse case when one rotates the long screw (2a) from the leftto the right, the cylinder (3a) moves toward the center of the mechanismsupport (1), and while the cylinder (3a) slides on the acute recess(20a), and the rear part of the metal plate (5) is lifted, which resultsin a lifting of the rear part of the door.

What is claimed is:
 1. A suspension system for sliding doors with aheight and inclination adjusting mechanism comprising a mechanismsupport fitted in an opening a section of the door, a short screw, along screw, two cylinders each with taphole extending perpendicularlywith respect to a longitudinal axis of the respective cylinder, eachtaphole receiving one of the short screw and the long screw, a springsteel plate adjacent the mechanism support for limiting longitudinalmovement of the short and long screws, a clamping metal plate of themechanism support in the section of the door, a centering pin of themechanism support in the section of the door, a centering pin screw ofthe centering pin laterally securing the mechanism support in thesection of the door, a connecting screw of the mechanism support and awheel support, wherein the mechanism support is surrounded by theopening in the section of the door and is fitted in the section, thesection having a U-shape, the connecting screw comprising a connectingpiece between the mechanism support and the wheel support, and apressure spring surrounding the connecting piece.
 2. The suspensionsystem for sliding doors as claimed in claim 1, wherein two free ends ofthe section form two corners, into which extends the mechanism support.3. The suspension system for sliding doors as claimed in claim 2,wherein the section of the door either comprises an independent part,which is fastened on an upper edge of the door, or the upper edge of thedoor is manufactured such that the door already houses this section. 4.The suspension system for sliding doors as claimed in claim 1, whereinthe section of the door either comprises an independent part, which isfastened on an upper edge of the door, or the upper edge of the door ismanufactured such that the door already houses this section.
 5. Thesuspension system for sliding doors claimed in claim 4, wherein even ifthe door is suspended on a doorframe, the inclination adjustingmechanism is capable of adjusting the door to every desired height andinclination without unhooking the door from the doorframe.
 6. Thesuspension system for sliding doors as claimed in claim 1, wherein themechanism support is prevented from running out of the section of thedoor by the two blocking pins, which are mounted on the two ends of thesection.
 7. The suspension system for sliding doors as claimed in claim1, wherein an upper end of the connecting screw is screwed into thewheel support, and a lower end is fitted into the mechanism support. 8.The suspension system for sliding doors as claimed in claim 7, whereinthe pressure spring of the connecting screw presses onto the clampingmetal plate so that the clamping metal plate is under constant tensionand in contact with the cylinders sliding underneath the clamping metalplate.
 9. The suspension system for sliding doors as claimed in claim 7,wherein when the cylinders move toward a center of the mechanismsupport, the cylinders both press onto the clamping metal plate, theclamping metal plate thereafter pressing against the pressure spring andthus reducing the height of the connecting screw and lifting the doorrelative to a floor.
 10. The suspension system for sliding doors asclaimed in claim 7, wherein the inclination adjustment mechanism iscapable of simultaneous adjustment to respective desired heights atfront and rear sides of the door.
 11. The suspension system for slidingdoors as claimed in claim 1, wherein the pressure spring of theconnecting screw presses onto the clamping metal plate so that theclamping metal plate is under constant tension and in contact with thecylinders sliding underneath the clamping metal plate.
 12. Thesuspension system for sliding doors as claimed in claim 1, whereinrotation of the short and long screws push or pull the cylinders towardor away from a center of the mechanism support.
 13. The suspensionsystem for sliding doors as claimed in claim 1, wherein when thecylinders move toward a center of the mechanism support, the cylindersboth press onto the clamping metal plate, the clamping metal platethereafter pressing against the pressure spring, and thus reducing theheight of the connecting screw relative to the clamping metal plate andlifting the door relative to a floor.
 14. The suspension system forsliding doors as claimed in claim 1, wherein when one rotates the shortscrew from the right to the left, one of the cylinders moves toward acenter of the mechanism support and slides on an acute recess, and afront part of the clamping metal plate lifts up and consequently only afront part of the door lifts up, in a reverse instance, when one rotatesthe long screw from the left to the right, the other one of thecylinders moves toward the center of the mechanism support and slides ona second acute recess, lifting a rear part of the clamping metal platewhich results in a lifting of a rear part of the door.
 15. Thesuspension system for sliding doors as claimed in claim 1, wherein theinclination adjusting mechanism is capable of simultaneous adjustment inan operating process which simultaneously adjusts respective desiredheights at front and rear sides of the door.
 16. The suspension systemfor sliding doors as claimed in claim 1, wherein even if the door issuspended on a door frame, the inclination adjusting mechanism iscapable of adjusting the door to every desired height and inclinationwithout unhooking the door from the door frame.
 17. A suspension systemfor a sliding door on a doorframe and having a height and inclinationadjusting mechanism comprising:a wheel support for movably mounting onthe doorframe, the wheel support including wheels supported thereby; aconnecting screw between the wheel support and a mechanism support; themechanism support fitting in and surrounded by an opening in a doorhaving a section with a U-shape; a clamping metal plate in the sectionof the door; two spaced cylinders adjacent the mechanical support andthe clamping metal plate; a pressure spring about the connecting screwso that one side of the clamping metal plate is under constant tensionfrom the pressure spring and the other side of the clamping metal plateis in constant contact with the cylinders; a short screw connected to afirst one of the cylinders; a long screw connected to a second one ofthe cylinders; and a spring steel plate adjacent the mechanism supportfor limiting longitudinal movement of the short and long screws.
 18. Thesuspension system of claim 17, wherein rotation of one of the short andlong screws moves one of the cylinders toward or away from a center ofthe mechanism support.
 19. The suspension system of claim 18, whereinthe cylinders slide on respective acute recesses, movement along therecesses increasing or decreasing the height of the connecting screwrelative to the clamping metal plate and lifting the door relative tothe floor.
 20. The suspension system of claim 18, wherein theinclination adjusting mechanism is capable of adjusting the door toevery desired height and inclination without unhooking the door from thedoorframe.
 21. The suspension system of claim 17, wherein rotation ofthe short screw in a first direction slides one of the cylinders towarda center of the mechanism support along an acute recess such that thecylinder presses onto the clamping metal plate which applies forcetoward the pressure spring such that a front part of the clamping metalplate thereby lifts up a front part of the door, andin a reverseinstance, rotation of the long screw in an the opposite direction slidesthe other one of the cylinders toward the center of the mechanismsupport along another acute recess such that the other cylinder pressesonto the clamping metal plate which applies force toward the pressurespring such that a rear part of the clamping metal plate thereby liftsup a rear part of the door.
 22. The suspension system of claim 17,wherein the connecting screw comprises a connecting piece between themechanism support and the wheel support.
 23. The suspension system ofclaim 17, wherein blocking pins mounted on ends of the section of thedoor prevent removal or movement of the mechanism support with respectto the door section.
 24. The suspension system of claim 17, including acentering pin laterally fixing the mechanism support in the section ofthe door; anda centering pin screw fixing the centering pin relative tothe mechanism support.